MAX5933EESA+【PDF 1/15 页】IC HOT-SWAP CONTROLLER 8-SOIC

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General Description

The MAX5933AMAX5933F/MAX5947A/B/C fully integrat-

ed hot-swap controllers for +9V to +80V positive supply

rails (MAX5947A/B/C), allow for the safe insertion and

removal of circuit cards into live backplanes without caus-

ing glitches on the backplane power-supply rail. The

MAX5947B is pin- and function-compatible with the

LT1641-2. The other devices offer added features such

as a choice of active-high or active-low power-good out-

puts (PWRGD/PWRGD), latched/autoretry fault manage-

ment, and autoretry duty-cycle options of 3.75% or 0.94%

(see the Selector Guide).

The MAX5933AMAX5933F are available with a default

undervoltage lockout threshold of +31V and operate over

a supply voltage range of +33V to +80V. The

MAX5947A/B/C are available with a default undervoltage

of +8.3V. All devices feature a programmable analog

foldback current limit. If the device remains in current limit

for more than a programmable time, the external

n-channel MOSFET is either latched off (MAX5933A/

MAX5933C/MAX5947A) or is set to automatically restart

after a timeout delay (MAX5933B/MAX5933D/MAX5933E/

MAX5933F/MAX5947B/MAX5947C).

The MAX5933_ and MAX5947_ operate in the extended

temperature range of -40癈 to +85癈. These devices are

available in an 8-pin SO package.

Applications

Hot Board Insertion

Electronic Circuit Breakers

Industrial High-Side Switch/Circuit Breakers

Network Routers and Switches

24V/48V Industrial/Alarm Systems

Features

f Pin- and Function-Compatible with the LT1641-2

(MAX5947B)

f Provides Safe Hot Swap for +9V to +80V Power-

Supply Range (MAX5947A/B/C)

f Safe Board Insertion and Removal from Live

Backplanes

f Latched/Autoretry Management

f Active-Low or Active-High Power-Good Output

f Programmable Foldback Current Limiting

f High-Side Drive for an External N-Channel MOSFET

f Built-In Thermal Shutdown

f Undervoltage Lockout (UVLO)

f Overvoltage Protection

f User-Programmable Supply Voltage

Power-Up Rate

Positive High-Voltage, Hot-Swap Controllers

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3263; Rev 1; 7/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxims website at www.maxim-ic.com.

Typical Application Circuit and Pin Configuration appear at

end of data sheet.

PART

TEMP RANGE

PIN-PACKAGE

MAX5933_ESA*

-40癈 to +85癈

8 SO

MAX5947_ESA*

-40癈 to +85癈

8 SO

*Insert the desired suffix from the Selector Guide into the blank

to complete the part number.

PART

LATCHED

FAULT

PROTECTION

AUTORETRY

FAULT

PROTECTION

PWRGD

OUTPUT LOGIC

DUTY CYCLE

(%)

DEFAULT UVLO

(V)

SUPPLY

VOLTAGE

RANGE (V)

MAX5933A

Yes

High

33 to 80

MAX5933B

Yes

High

3.75

33 to 80

MAX5933C

Yes

Low

33 to 80

MAX5933D

Yes

Low

3.75

33 to 80

MAX5933E

Yes

High

0.94

33 to 80

MAX5933F

Yes

Low

0.94

33 to 80

MAX5947A

Yes

Low

8.3

9 to 80

MAX5947B

Yes

High

3.75

8.3

9 to 80

MAX5947C

Yes

Low

3.75

8.3

9 to 80

Selector Guide

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